The most salient difference between chemical peels and microdermabrasion is that microdermabrasion is a non-chemical procedure, and attacks imperfections by actually "sanding" flaws from the skin surface. While treatment plans for microdermabrasion and mild chemical peels such as glycolic acid chemical peels are similar, more advanced chemical peels require only one session. However, deep chemical peels such as the phenol peel also require much more recovery time than microdermabrasion and the more mild peels. Also unlike microdermabrasion, deep chemical peels change the actual pigmentation of the skin through bleaching. Because of this, patients with naturally darker complexions may be better candidates for microdermabrasion.
Spread of toxin effects. The effect of botulinum toxin may affect areas away from the injection site and cause serious symptoms including: loss of strength and all-over muscle weakness, double vision, blurred vision and drooping eyelids, hoarseness or change or loss of voice, trouble saying words clearly, loss of bladder control, trouble breathing, and trouble swallowing.